Effect Sensor | Magnetic Pole Discriminator | N/S Pole Detection Module

This small module detects magnetic fields and their polarity. It uses a Hall sensor to tell north from south poles, showing each with a different colored LED. It's a magnetic pole detector. Features and Benefits - Two-Color LED Indicator - A red light comes on for a north pole, a green light for a south pole. This shows polarity instantly. - Sensitive Detection - It can sense a magnet's field up to 3 cm away. This means it does not need to touch the magnet. - Simple Digital Output - The module sends a basic high or low signal. This makes it easy to use with microcontrollers in DIY sensor kits. - Flexible Power Input - It works with voltages from 2.5V to 9V. This lets it connect to many common power sources for Arduino projects. Applications - DIY Electronics - Make custom switches that don't touch, security alarms, or magnetic levitation displays that react to magnets. - Motor Diagnostics - Use it to check magnets in brushless DC motors for motor control. - Educational Demonstrations - It's a simple, visual tool. It helps teach students how to find north and south poles and see magnetic fields. 🛠️ Tools Required To test this Effect Sensor effectively, a few basic tools are necessary. A multimeter capable of measuring DC voltage is essential for verifying power supply and output signals. For powering the module, a stable 3.3V-5V DC power supply is required, such as a bench power supply or a battery pack within this voltage range. Jumper wires are needed to connect the sensor to the power supply and multimeter. Additionally, a small magnet will be indispensable for stimulating the Hall Effect Sensor and observing its response. No specialised tools are typically required beyond these common electrical testing items. 📌 Pinout Identification The specific pinout for this Effect Sensor is not provided in the verified specifications. However, most digital Hall Effect Sensors, including this Magnetic Pole Discriminator, commonly feature three pins: VCC (power input), GND (ground), and OUT (signal output). VCC will connect to the positive terminal of your 3.3V-5V power supply, and GND to the negative. The OUT pin provides the digital signal indicating the presence and polarity of a magnetic field. Always consult any accompanying documentation or silkscreen labels on your specific sensor module to confirm the exact pin assignments before applying power, as incorrect wiring can damage the component. 🧪 Method 1: Testing On-Bench (Removed from Circuit) Setup To test the Effect Sensor on a workbench, begin by connecting the power supply. Connect the positive terminal of your 3.3V-5V power supply to the VCC pin of the Magnetic Pole Discriminator. Connect the negative terminal of the power supply to the GND pin of the sensor. Set your multimeter to measure DC voltage. Connect the black probe of the multimeter to the GND pin of the sensor. Connect the red probe of the multimeter to the OUT pin of the sensor. Ensure all connections are secure before proceeding to the testing phase. Testing Digital Sensors (Switch / Latch Type) With the Effect Sensor powered and the multimeter connected to the output, bring a magnet near the sensing face of the module. As a Magnetic Pole Discriminator, this sensor detects both North and South poles. Observe the multimeter reading. For a digital output Hall Effect Sensor, the voltage on the OUT pin will typically switch between a high state (close to your supply voltage, e.g., 5V if using a 5V supply) and a low state (close to 0V) depending on the presence and polarity of the magnetic field. Note which pole (North or South) causes the output to switch high and which causes it to switch low, confirming the sensor's functionality.